Cooper&#39;s tool.



J. LOSAK.

GOOPERS TOOL.

APPLICATION IILED APILE, 1912,

Patented Jan. 28, 1913.

cfOZZ/Z Z JOHN LOSAK, OF MARCUS HOOK, PENNSYLVANIA.

COOPERS TOOL.

Specification of Letters Patent.

Patented Jan. 28, 1913.

Application filed April 5, 1912. Serial No. 688,704.

To all whom it may concern:

Be it known that I, JOHN LOSAK, a citizen of the United States, residingat Marcus Hook, in the county of Delaware and State of Pennsylvania,have invented new and useful Improvements in Coopers Tools, of which thefollowing is a specification.

This invention relates to coopers tools, the object in view being toprovide a hand operated tool for grooving and crozing the staves of abarrel preparatory to the insertion of a barrel head, the deviceembodying in connection with a stock, a cutter head adjustable withrelation to the stock so as to provide for the formation of the grooveand croze at any desired distance from the edges of the stave.

With the above and other objects in view, the invention consists in theconstruct-ion, combination and arrangement of parts, as will behereinafter more fully described, illustrated in the accompanyingdrawing, and pointed out in the claim hereunto appended.

Figure 1 is a reverse perspective View of the improved coopers tool.Fig. 2 is a horizontal section through the cutter head. Fig. 3 is avertical cross section through the cutter head and through the shankthereof. Fig. 4c is a vertical cross section taken in line with thecroze. Fig. 5 is a detail section showing one of the metal inserts inthe stock. The coopers tool contemplated in this invention comprisesessentially a stock 1 which is preferably of segmental form as shown inthe drawings and provided with metal inserts 2 arranged in an arc inaccordance with the diameter of the barrel to be operated upon, saidmetal inserts protecting the stock 1 and materially increasing the lifeand durability thereof. This stock is provided with an aperture 3 onopposite sides of which are arranged clamping jaws or plates 4 and 5each provided with a base flange 6 which is secured to the top of thestock by means of screws 7 or their equivalent. The upstanding portionsof the plates 4 and 5 are provided with holes oppositely arranged toreceive a clamping bolt 8 preferably equipped with a thumb. nut 9, thepurpose of which will hereinafter appear.

The cutter head 10 is segment shaped to agree with the curvature of theinner wall of the barrel staves and the outer edge or periphery thereofis rounded as shown at 11 to accord with the size of the groove to beformed in the inner faces of the staves. The cutter head is providedwith an oblique channel 12 for the reception of a cutting bit 13 shapedto form the groove in the barrel, said cutting bit being provided forthat purpose with a half round cutting edge 14, which is adjusted so asto project slightly beyond the rounded face 11 of the cutter head, thecutting bit being held in place by means of the usual wedge 15.Centrally the cutter head is provided in its under side with a clearancecavity or recess 16 which is intersected by the channel for the cuttingbit as clearly shown in the drawings. On its upper side the cutter headis provided with a vertical shank 17 which extends through the opening 8in the stock and fits between the plates 4 and 5 above described. Thisshank is provided with a longitudinal slot 18 through which the clampingbolt 8 passes and within said slot is arranged a coiled expansion spring19 which exerts a pressure against the clamping bolt 8, serving to pressthe cutter head downward when the clamping bolt is loosened. In the endportion of said spring is inserted a stud 20 having a head 21 forming ashoulder or seat for the extremity of the spring and also forming abearing which lies in contact with the clamping bolt 8 andpreventingwear upon the extremity of the spring. This spring greatlyfacilitates the adjustment of the cutter head toward and away from thestock so as to regulate the depth at which the cutter head will operatebelow the top edge of the barrel. The cutter head is further providedwith a recess or slot 22 extending transversely thereof and intersectingthe channel in which the cutter bit 13 lies. recess 22 is arranged acrozing bit 23 provided wit-h saw shaped teeth 24 and of a width adaptedto cut a kerf sufficiently wide to receive the edge of the barrel head.Arranged at the side of the crozing bit is a clamping plate and depthgage 25 against which bears the inner end of a binding screw 26 forholding the depth gage and crozing bit in fixed relation to the cutterhead. Secured to the bottom of the cutter head is a metal plate 27 whichis tapped and threaded as shown at 28 to receive the binding screw 26.

I claim A coopers tool, comprisig a segmental cutter head, a shankextending at a right In this angle to the plane of the head and provideding to draw the same tightly against the 10 with opposite flat faces anda longitudinal shank. slot therein, an expansion spring in said Intestimony whereof I affiX my signature slot, a stock adjustable on saidshank toward in presence of two witnesses.

' and away from the cutter head, flat shank clamping jaws extendingupwardly from JOHN LOSAK' the stock on opposite sides of the shank, andWitnesses: a clamping bolt passing through the slot FRANK D. VERNON, andconnecting the clamping jaws and act- Gr. U]. VERNON, J 1.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

